private void Init()
{
try
{
var methodField = UnhollowerUtils.GetIl2CppMethodInfoPointerFieldForGeneratedMethod(Original);
if (methodField == null)
{
throw new Exception($"No IL2CPP equivalent found for {Original.FullDescription()}. The target might have been automatically generated by Unhollower (e.g. field accessor).");
}
// Get the native MethodInfo struct for the target method
originalNativeMethodInfo = (Il2CppMethodInfo *)(IntPtr)methodField.GetValue(null);
// Create a trampoline from the original target method
var trampolinePtr = DetourGenerator.CreateTrampolineFromFunction(originalNativeMethodInfo->methodPointer, out _, out _);
// Create a modified native MethodInfo struct to point towards the trampoline
modifiedNativeMethodInfo = (Il2CppMethodInfo *)Marshal.AllocHGlobal(Marshal.SizeOf <Il2CppMethodInfo>());
Marshal.StructureToPtr(*originalNativeMethodInfo, (IntPtr)modifiedNativeMethodInfo, false);
modifiedNativeMethodInfo->methodPointer = trampolinePtr;
isValid = true;
}
catch (Exception e)
{
DetourLogger.LogWarning($"Failed to init IL2CPP patch backend for {Original.FullDescription()}, using normal patch handlers: {e.Message}");
}
}
public INativeMethodInfoStruct Wrap(Il2CppMethodInfo *methodPointer)
{
if ((IntPtr)methodPointer == IntPtr.Zero)
{
return(null);
}
else
{
return(new NativeMethodInfoStructWrapper((IntPtr)methodPointer));
}
}
private static IntPtr StaticVoidIntPtrInvoker(IntPtr methodPointer, Il2CppMethodInfo *methodInfo, IntPtr obj, IntPtr *args)
{
Marshal.GetDelegateForFunctionPointer <VoidCtorDelegate>(methodPointer)(obj);
return(IntPtr.Zero);
}
public INativeMethodInfoStruct Wrap(Il2CppMethodInfo *methodPointer)
{
return(new NativeMethodInfoStructWrapper((IntPtr)methodPointer));
}
